Feeder.



No. 896,656. PATENTED AUG. 18 1908.

P. M. MOTT.

FEEDER. APPLIOATION FILED SEPT. 12, 1907.

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FEEDER.

APPLICATION FILED SEPT.12,1907.

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FRANK MAY MOTT, OF DOUGLAS, ARIZONA TERRITORY.

FEEDER.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed September 12, 1907. Serial No. 392,488.

To all whom it may concern:

Be it known that I, FRANK MAY MoTT, a citizen of the United States, anda resident of Douglas, in the county of Cochise and Territory ofArizona, have invented a new and Improved Feeder, of which the followingis a full, clear, and exact description.

The object of the invention is to provide a new and improved feeder,which is simple and durable in construction, easily adjusted, not liableto get out of order, more especially designed-for feeding ore and othermaterials to stamp mills and other machinery or devices, and arranged topermit of governing the amount of the material fed according to thecapacity and working of the stamps, to insure proper reduction of thematerial without danger of choking the mill by overfeedmg.

The invention consists of novel features and parts and combinations ofthe same, which will be more fully described hereinafter and thenpointed out in the claim.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a sectional side elevation of the improvement on the line 11of Fig. 2 Fig. 2 is a plan view of the same; Fig. 3 is an enlargedsectional side elevation of the adjustable tension device for the scoop;Fig. 4 is a sectional side elevation of a modified form of theimprovement; Fig. 5 is an enlarged sectional side elevation of the throwregulating device for the scoopshown in Fig. 4, and Fig. 6 is anenlarged sectional plan view of the same on the line 66 of Fig. 4.

Outside of the bin A containing the ore or other material, is secured achute B into which passes the material from the bin A by way of theusual ore bin gate 0, and the lower end of the chute B delivers thematerial to a scoop D pivoted at E on a bracket E secured to theunderside of the chute B. The scoop D is open at both ends and its sidesfit against the sides of the chute B, so that the material passing downthe chute B readily passes into the scoop D to fill the same. When thescoop D is in its normal position, as illustrated in Fig. 1, its bottomis in an approximately horizontal position, so that the material is heldin the scoop D, but when the scoop D is rocked downward into theposition shown in dotted lines in Fig. 1, then the material in the scoopdrops out of the same to the machine to be fed.

The scoop D is provided with arms F and G extending in oppositedirections from the top and bottom of the scoop, as plainly indicated inFigs. 1 and 2, and the arm F straddles with its outer forked end F thestem H of a stamp mill of any approved construction, and to which thematerial is to be fed by the chute B. The top of the forked end F isadapted to be engaged by a collar II on the stem H, so that when thelatter moves downward the collar H engages the forked end F, thusswinging the arm F and consequently the scoop D downward, for the latterto discharge the material to the stamp mill. When the stem H movesupward, then the scoop D is immediately returned to its normalnon-discharging position by the action of a spring device I, connectedwith the arm G. This spring device I is provided with a rod I having itsends I I threaded, the threaded end I screwing into a boss E formed onthe bracket E. A nut J screws on the threaded portion I against the bossE to securely hold the rod I in position. The lower end I of the rod Iextends through the slotted free end G of the arm G (see Fig. 3) and onthis threaded end G screws a nut K, for the free end of the arm G torest on when the scoop D is in normal non-delivering position, as shownin Fig. 1.

The nut K is adapted to be locked in place by a jam nut K, and on thesaid nut K is secured a sleeve K through which extends loosely the rodI. The top of the free end G of the arm G is provided on opposite sideswith upwardly extending lugs G resting on the under side of a washer L,mounted loosely on the sleeve K and pressed on at its upper surface byone end of a spring L coiled around the sleeve K and the rod I. Theupper end of the spring L abuts against a nut L screwing on the upperthreaded end I of the rod I, to permit of adjusting the tension of thespring L. The nut L is adapted to be locked in place after the desiredadjustment is made by a jam nut L screwing on the end I of the rod I.Now by the arrangement described, the arm G and consequently the scoop Dis spring-- pressed, to return the scoop D to normal nondeliveringposition as soon as the stem I-I rises. Thus during the upward movementof the stem H the feeding of the material ceases, and during thedownward movement of the stem H the scoop D is tilted to allow the ma-In the modified form illustrated in Figs.

4, 5 and 6, the chute B is secured to the ore bin A, and the scoop D ispivoted at E on a bracket E attached to the under side of the chute B.The rearward extending arm G of the scoop D is pivotally connected withan extension l on a cylinder N, in which reciprocates the piston Opivotally connected with the crank P of a crank shaft 1? driven bysuitable means, such as a pulley P and belt connected with othermachinery. The piston O is made hollow and in it extends the head Q of astop rod Q screwing in the bottom of the cylinder extension N, the lowerouter end of the stop rod Q being provided with a suitable handle Qunder the control of the'operator, for screwing the stop rod Q up ordown in the cylinder N and its extension N. A jam nut Q screws on thethreaded lower end of the stop rod Q and abuts against the lower end ofthe extension N, to lock the stop rod Q in place after the same isadjusted. Now by the arrangement described the rotating crank shaft Pimparts motion to the piston. O, which by coming in contact at eitherend with the head Q imparts an up and down movement to the latter, andconsequently to the cylinder N and its extension N in which the stop rodQ is secured. The up and down movement thus given to the cylinder N andto the extension N causes a locking of the arm G and the scoop D toallow the material in the scoop to drop down to the mill, to be reducedby the latter in the usual manner. By adjusting the rod Q more or lessthrow can be given to the 'cj linder N and to the extension N, and

consequently to the scoop D, to suit the nature of the material undertreatment at the time.

The feeder shown and described is very simple and durable inconstruction, and can be readily adjusted to vary the amount of materialperiodically discharged from the scoops D or D, and the arrangement permits of feeding any kind'of ore, wet or dry fine or coarse, or fine andcoarse mixed.

'The feeder may be readily applied to any and all kinds of mills, jigs,launders or conveyers of any kind or to any kind of machinery needing anautomatic feed.

Having thus described my invention, I claim as newand desire to secureby Letters Patent:

A feeder for stamp mills, comprising a fixed chute connected with thesupply, a rocking scoop forming a continuation of the lower end of saidchute for the material passing down the chute to fill the said scoop, anarm on the scoop adapted to be engaged by a movable part of the stampmill, a second arm on the scoop and a spring device connected with thearm to hold the scoop normally in a closed or non-delivering position,said device comprising a rod threaded into the chute and passing throughthe arm, a spring encircling the rod and bearing against the arm, meansfor adjusting the tension of the spring, and means for adjusting the armon the rod.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK MAY MOTT. Witnesses W. S. DIxoN, NORMA G. MURPHY.

